2004 Mercedes SL-Class Owner's Manual - Page 267

Operation Tires and wheels Activating the tire inflation pressure monitor You must activate the tire inflation pressure monitor in the following cases: if you have changed the tire pressure if you have replaced the wheels or tires if you have installed new wheels or tires Make sure the tire pressure is set correctly. Press the k button on the multifunction steering wheel until the inflation pressure of each tire appears in the right display field. i If transporting a deflated road wheel or additional wheel sensors in the vehicle, the tire inflation pressure monitor should not be reactivated until the deflated wheel or additional wheel sensors have been removed from the vehicle. Otherwise, the deflated wheel or additional sensors could confuse the tire inflation pressure monitor system and cause it to malfunction. Press the reset button ( page 22). The following message will appear in the speedometer display field: Monitor current tire pressure? If you wish to cancel activation: Press ç button. If the following message appears in the speedometer display field: Reactivate tire press. monit. Re-start the activation of the tire inflation pressure monitor. If the following message appears in the speedometer display field: Tire pressure Check tires! Re-start the activation of the tire inflation pressure monitor. Press æ button. The following message will appear in the speedometer display field: Tire pressure displayed after driving a few mins. Reactivate w/ R-button 266